This is an indispensable complement to Time Machine. It's very feature-rich; it tells me pretty much everything I could possibly want to know about what's backed up and when. It's fast, and intelligent enough to know if Time Machine is messing around behind the scenes. The interface is nicely thought out, to my way of thinking.

The only suggestion I can think of for the next version would be a way to select two versions of a file and put up the meta-info for both (icon, file type, preview, create/open/mod/backup dates etc.) side by side. A diff function to compare two files would be the icing on the cake, but might be rather hard for non-text files.

Nicely done!